API 5L Qib B - kuj tau xaiv L245 - yog tus qauv -strength kab yeeb nkab qib. Nws zaum ntawm qhov kawg ntawm API 5L lub zog spectrum, uas ua tau zoo hauv nws txoj kev nyiam: lub zog nruab nrab txhais tau hais tias weldability zoo heev, kev ua haujlwm tau zoo, thiab tus nqi qis dua piv rau qib siab dua liX52los yogX65. Qhov kev sib xyaw ua ke ua rau nws mus- xaiv rau cov roj dav dav, roj av, xa dej, thiab cov kav dej.
Cov lus qhia no suav nrog cov txheej txheem tsim khoom, chemistry, cov ntaub ntawv tshwj xeeb, thiab chav tsev - hnyav lub rooj rau loj - txoj kab uas hla Qib B seamless yeeb nkab.
1. Chemical Composition thiab Mechanical Properties
Qib B chemistry yog tswj kom sib npaug weldability nrog lub zog xav tau. API 5L muaj ob yam khoom tshwj xeeb qib - PSL1 (pib) thiab PSL2 (txhim kho, nrog rau cov kev xav tau ntxiv).
Chemical Composition (Kev Ntsuas Kub)
|
Element |
Qib B PSL1 (max %) |
Qib B PSL2 (max %) |
|
Cov pa roj carbon (C) |
0.28 |
0.22 |
|
Manganese (Mn) |
1.20 |
1.20 |
|
Phosphorus (P) |
0.030 |
0.025 |
|
Sulfur (S) |
0.030 |
0.015 |
|
Carbon Equivalent (CEV) |
Tsis yuam |
Tsawg dua lossis sib npaug li 0.42 |
Mechanical Properties
|
Khoom |
Qib B (PSL1) |
Qib B (PSL2) |
|
Min. yield zog |
245 MPa (35 ksi) |
245 MPa (35 ksi) |
|
Min. tensile zog |
415 MPa (60 ksi) |
415 MPa (60 ksi) |
|
Yield-rau-tensile ratio |
Tsis tau teev tseg |
Tsawg dua lossis sib npaug li 0.93 |
|
Charpy V-qhov cuam tshuam |
Tsis yuam |
Yuav tsum tau nyob ntawm qhov ntsuas kub. |
Cov ntsiab lus qis dua hauv PSL2 (0.22% vs 0.28%) ncaj qha txhim kho weldability, thaum qhov yuav tsum tau CEV txwv kom ntseeg tau qhov kev ua haujlwm zoo sib xws. Xaiv PSL2 kom siab dua - siab lossis kev pabcuam tseem ceeb; PSL1 yog qhov tsim nyog rau txoj haujlwm sib kis.
Daim ntawv ceeb toom:Kev tiv thaiv rau sulfide kev nyuaj siab tawg (SSC) tsis yog ib qho khoom vaj khoom tsev ntawm Qib B. Rau kev tsim cov roj av qaub, cov yeeb nkab yuav tsum ua tau raws li PSL2 cov kev cai thiab cov kev pabcuam ntxiv ntawm NACE MR0175 / ISO 15156 - nrog rau kev txwv hardness thiab SSC xeem. Cov no yuav tsum tau qhia thaum lub sijhawm xaj.
2. Specification
| Yam khoom | Specification |
|---|---|
| Khoom | API 5L Gr B loj - txoj kab uas hla qis - carbon steel kav |
| Khoom siv | API 5L Qib B (L245) |
| Txuj | API Spec 5L; ASTM A53M / A106M raws li kev thov |
| Nto | Dub xim, kua roj vanish, oiled los yog galvanized |
| Cov kav dej ntev | Tsau ntev, random ntev, lossis raws li xav tau |
| Cov yeeb nkab kawg | Plain xaus los yog beveled xaus |
| Xaus kev tiv thaiv | Cov kaus mom yas (OD me) lossis cov hlau tiv thaiv (OD loj) |
| Daim ntawv thov | Dej, roj, roj, qauv thiab boiler piping |
| Kev sim | Kev tshuaj xyuas tshuaj lom neeg, kev ntsuas khoom siv tshuab thiab thev naus laus zis, kev tshuaj xyuas sab nrauv thiab qhov loj me, ntsuas dej hydrostatic, X- kev kuaj kab hluav taws xob |
| Productivity | 20,000 tons ib hlis |
| Min. xaj | 10 ton |
| Lus ceeb toom | Cov qauv tsim tshwj xeeb muaj nyob ntawm kev thov |
3. Chav ntsuas qhov hnyav (kg / m)
Lub theoretical unit hnyav ntawm seamless yeeb nkab yog xam raws li(OD - WT) x WT x 0.02466 kg/m, qhov twg OD thiab WT nyob hauv millimeters. Cov lus hauv qab no teev cov nominal chav ntsuas qhov hnyav rau qhov loj - txoj kab uas hla (tus nqi hauv kg / m).
| Nominal OD (mm) / WT (mm) | 5.0 | 5.5 | 6.0 | 7.0 | 8.0 | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 16.0 | 18.0 | 20.0 | 22.0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 273 | 33.04 | 36.28 | 39.51 | 45.92 | - | - | - | - | - | - | - | - | - | - | - | - |
| 323.9 | 39.32 | 43.18 | 47.04 | 54.70 | 62.32 | 69.89 | - | - | - | - | - | - | - | - | - | - |
| 355.6 | 43.23 | 47.48 | 51.73 | 60.18 | 68.57 | 76.92 | - | - | - | - | - | - | - | - | - | - |
| 406.4 | 49.44 | 54.32 | 59.24 | 68.94 | 78.60 | 88.20 | 97.75 | - | - | - | - | - | - | - | - | - |
| 457 | 55.73 | 61.24 | 66.73 | 77.69 | 88.58 | 99.43 | 110.23 | 120.98 | 131.60 | 142.34 | - | - | - | - | - | - |
| 508 | - | - | 74.28 | 86.48 | 98.64 | 110.75 | 122.81 | 134.82 | 146.78 | 158.69 | - | - | - | - | - | - |
| 610 | - | - | 89.37 | 104.09 | 118.76 | 133.39 | 147.96 | 162.48 | 176.96 | 191.39 | - | - | - | - | - | - |
| 711 | - | - | 104.31 | 121.52 | 138.69 | 155.80 | 172.87 | 189.88 | 206.85 | 223.76 | - | - | - | - | - | - |
| 813 | - | - | - | 139.13 | 158.81 | 178.44 | 198.02 | 217.55 | 237.03 | 256.46 | 278.88 | - | - | - | - | - |
| 914 | - | - | - | 178.74 | 200.06 | 222.93 | 244.95 | 266.92 | 288.84 | 310.72 | 332.54 | 354.31 | 397.74 | 440.95 | 483.96 | - |
| 1016 | - | - | - | 198.86 | 223.49 | 248.08 | 272.62 | 297.10 | 321.54 | 345.93 | 370.27 | 394.56 | 443.02 | 491.26 | 539.30 | - |
| 1220 | - | - | - | - | 296.39 | 327.95 | 357.47 | 386.94 | 416.36 | 445.73 | 475.58 | 533.58 | 591.88 | 649.98 | - | - |
| 1420 | - | - | - | - | 347.71 | 362.21 | 416.66 | 451.06 | 485.41 | 519.71 | 553.96 | 622.36 | 690.52 | 758.49 | - | - |
| 1620 | - | - | - | - | 397.03 | 436.46 | 475.84 | 515.17 | 554.46 | 593.60 | 632.87 | 711.14 | 789.17 | 867.00 | - | - |
| 1820 | - | - | - | - | 446.35 | 490.71 | 535.02 | 579.29 | 623.50 | 667.67 | 711.79 | 799.92 | 887.81 | 975.51 | - | - |
| 2020 | - | - | - | - | 495.67 | 544.96 | 594.21 | 643.40 | 692.55 | 741.65 | 796.70 | 888.70 | 986.46 | 1084.21 | - | - |
| 2220 | - | - | - | - | 544.99 | 599.21 | 653.39 | 707.52 | 761.60 | 815.63 | 869.61 | 977.48 | 1085.11 | 1192.53 | - | - |
| 2420 | - | - | - | - | 594.34 | 635.5 | 712.62 | 771.62 | 830.20 | 889.66 | 948.05 | - | - | - | - | - |
Tus nqi yog qhov ntsuas qhov ntsuas qhov ntsuas; qhov hnyav tiag tiag ua raws li daim ntawv pov thawj zeb thiab cov kev tso cai kam rau ua. Rau qhov nruab nrab qhov ntau thiab tsawg, suav nrog cov qauv saum toj no es tsis yog interpolating.
4. Cov txheej txheem tsim khoom
API 5L Qib B loj- txoj kab uas hla cov yeeb nkab yog tsim los ntawm siab- cov pa roj carbon zoo- hlau lossis qis- alloy billets los ntawm kub- dov lossis txias- cov txheej txheem kos duab los tsim cov qauv tubular seamless. Cov kab ntau lawm khiav cov txheej txheem tag nrho: nruam casting ntawm round billet, ntiv nplhaib- cub cua sov, tho, nruam dov, sizing, txias, straightening thiab tsis yog- kuaj kev puas tsuaj. Kub dov refines cov qauv nplej, uas txhim kho cov yeeb nkab qis -kub toughness. Piv nrog rau cov yeeb nkab welded, cov qauv seamless tshem tawm cov welded raws li qhov muaj peev xwm tsis muaj zog, muab kev ntseeg tau zoo dua hauv siab - kev pabcuam siab (qhov kev ua haujlwm siab ntawm 4-8 MPa) thiab hauv xov xwm corrosive.
API 5L GRB Loj Diameter Tsawg Carbon Steel Pipes
API 5L GRB Kab Yeeb Nkab Ntim thiab xa khoom
API 5L Yeeb MTC
FAQ
Puas yog API 5L Qib B zoo ib yam li L245?
Yog lawm. Qib B siv cov qauv tsim (35 ksi yam tsawg kawg nkaus tawm los), thaum L245 siv cov metric system (245 MPa yam tsawg kawg nkaus tawm los). Lawv xa mus rau tib qib hauv API 5L.
Qhov txawv ntawm Qib B thiab X42 lossis X52 yog dab tsi?
Qib B muaj lub zog qis zog (245 MPa / 35 ksi) piv rau X42 (290 MPa / 42 ksi) lossis X52 (360 MPa / 52 ksi). Qib B yooj yim dua rau vuam thiab txo tus nqi, ua rau nws zoo tagnrho rau kev siv qis - rau - nruab nrab cov ntawv thov. Cov qib siab dua yog siv thaum muaj kev ua haujlwm siab dua yuav tsum muaj zog ntau dua.
Qib B seamless yeeb nkab puas siv tau rau boiler piping?
No. API 5L Qib B yog cov kab yeeb nkab qib tsim los rau kev xa cov kua dej. Rau boiler tubing, siv ASTM A106 Qib B lossis ASME SA210, uas yog tsim tshwj xeeb rau kev ua haujlwm siab - kub.
Qhov txawv ntawm PSL1 thiab PSL2 rau Qib B yog dab tsi?
PSL2 muaj cov pa roj carbon tsawg (0.22% vs 0.28%), nruj dua phosphorus thiab sulfur txwv, yuav tsum tau Charpy impact testing, carbon equivalent limit (CEV<=0.42), and a yield-to-tensile ratio cap. Siv PSL2 rau qhov tseem ceeb, tswj hwm, lossis qaub- daim ntawv thov kev pabcuam.
Qhov ntsuas qhov hnyav ntawm seamless yeeb nkab li cas?
Cov mis yog W=(OD − WT) × WT × 0.02466 kg/m, qhov twg OD thiab WT yog millimeters. Qhov tas mus li 0.02466 yog muab los ntawm qhov ceev ntawm carbon steel (7.85 g / cm³) thiab cov yeeb nkab hla -sectional geometry.
Cov ntaub ntawv
API Specification 5L - Specification rau Kab Yeeb (PSL1 / PSL2)
ASTM A53 / A 106 - Txuj kev tshwj xeeb rau seamless carbon steel yeeb nkab
NACE MR0175 / ISO 15156 - Cov ntaub ntawv siv rau hauv H₂S-muaj ib puag ncig
ASME B36.10M - Welded thiab Seamless Wrought Steel Pipe (qhov loj me)
